| Year | Value | | 2022 | 70,094 | | 2021 | 69,438 | | 2020 | 68,311 | | 2019 | 67,170 | | 2018 | 66,058 | | 2017 | 65,087 | | 2016 | 64,015 | | 2015 | 63,384 | | 2014 | 63,342 | | 2013 | 63,186 | | 2012 | 62,940 | | 2011 | 62,611 | | 2010 | 63,522 | | 2009 | 65,663 | | 2008 | 67,692 | | 2007 | 69,810 | | 2006 | 72,044 | | 2005 | 72,071 | | 2004 | 69,817 | | 2003 | 67,408 | | 2002 | 64,927 | | 2001 | 62,432 | | 2000 | 61,070 | | 1999 | 60,840 | | 1998 | 60,575 | | 1997 | 60,271 | | 1996 | 59,929 | | 1995 | 58,939 | | 1994 | 57,308 | | 1993 | 55,672 | | 1992 | 54,032 | | 1991 | 52,402 | | 1990 | 50,736 | | 1989 | 48,991 | | 1988 | 47,185 | | 1987 | 45,338 | | 1986 | 43,473 | | 1985 | 41,688 | | 1984 | 39,924 | | 1983 | 38,042 | | 1982 | 36,079 | | 1981 | 34,324 | | 1980 | 32,785 | | 1979 | 31,157 | | 1978 | 29,440 | | 1977 | 27,675 | | 1976 | 25,891 | | 1975 | 24,116 | | 1974 | 22,371 | | 1973 | 20,665 | | 1972 | 19,019 | | 1971 | 17,437 | | 1970 | 15,919 | | 1969 | 14,468 | | 1968 | 13,080 | | 1967 | 11,752 | | 1966 | 10,559 | | 1965 | 9,554 | | 1964 | 8,655 | | 1963 | 7,799 | | 1962 | 6,990 | | 1961 | 6,230 | | 1960 | 5,519 |
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